Interaction of phonons with discrete breather in strained graphene

Abstract

We numerically analyze the interaction of small-amplitude phonon waves with standing gap discrete breather (DB) in strained graphene. To make the system support gap DB, strain is applied to create a gap in the phonon spectrum. We only focus on the in-plane phonons and DB, so the issue is investigated under a quasi-one-dimensional setup. It is found that, for the longitudinal sound waves having frequencies below 6 THz, DB is transparent and thus no radiation of energy from DB takes place; whereas for those sound waves with higher frequencies within the acoustic (optical) phonon band, phonon is mainly transmitted (reflected) by DB, and concomitantly, DB radiates its energy when interacting with phonons. The latter case is supported by the fact that, the sum of the transmitted and reflected phonon energy densities is noticeably higher than that of the incident wave. Our results here may provide insight into energy transport in graphene when the spatially localized nonlinear vibration modes are presented.

References in corpus (24)

• Thermal conduction in classical low-dimensional lattices
• Phononics: Manipulating heat flow with electronic analogs and beyond
• Discrete Breathers
• Thermal diode: Rectification of heat flux
• Heat Transport in low-dimensional systems
• Thermal Logic Gates: Computation with phonons
• Negative differential thermal resistance and thermal transistor
• Quantum thermal transistor
• Energy transmission in the forbidden bandgap of a nonlinear chain
• Melting temperature of graphene
• Suppression of thermal conductivity in graphene nanoribbons with rough edges
• Nonlinear supratransmission and bistability in the Fermi-Pasta-Ulam model
• Properties of discrete breathers in graphane from ab initio simulations
• Nanoscale phase-engineering of thermal transport with a Josephson heat modulator
• Energy transfer in strained graphene assisted by discrete breathers excited by external ac driving
• Scroll configurations of carbon nanoribbons
• Crossover from ballistic to normal heat transport in the ${\varphi }^4$ lattice: If nonconservation of momentum is the reason, what is the mechanism?
• Discrete breathers assist energy transfer to ac driven nonlinear chains
• Transverse intrinsic localized modes in monatomic chain and in graphene
• Long-lived discrete breathers in free-standing graphene
• Crossover between different universality classes: Scaling for thermal transport in one dimension
• High-frequency thermal processes in harmonic crystals
• A Rich Example of Geometrically Induced Nonlinearity: From Rotobreathers and Kinks to Moving Localized Modes and Resonant Energy Transfer
• Anomalous temperature-dependent heat transport in one-dimensional momentum-conserving systems with soft-type interparticle interaction

Cited by in corpus (3)

• Wavelet imaging of transient energy localization in nonlinear systems at thermal equilibrium: the case study of NaI crystals at high temperature
• Equilibration of sinusoidal modulation of temperature in linear and nonlinear chains
• Phonons scattering off discrete asymmetric solitons in the absence of a Peierls-Nabarro potential